Cell Communication

Front

What is the purpose of signal transduction pathways?

Back

To amplify the signal and elicit a cellular response.

Front

What are the three main steps in a signal transduction pathway?

Back

Reception, Transduction, Response.

Front

Define apoptosis.

Back

Apoptosis is programmed cell death.

Front

What occurs during a phosphorylation cascade?

Back

A protein kinase adds a phosphate to a relay molecule, causing a change in shape to activate it.

Front

What is a signaling molecule called?

Back

A ligand.

Front

What role do ligands play in cell communication?

Back

Ligands bind to receptors to initiate signal transduction pathways.

Front

What is the function of receptors in signal transduction?

Back

Receptors detect signaling molecules and initiate the transduction process.

Front

Explain the concept of amplification in signal transduction.

Back

Amplification refers to the process where a single signaling molecule can lead to a large response in the cell.

Front

What is the significance of the transduction step in signal transduction pathways?

Back

Transduction converts the signal into a form that can bring about a cellular response.

Front

How does a change in shape of a relay molecule affect signal transduction?

Back

A change in shape can activate the relay molecule, allowing it to propagate the signal.